How to implement DirectShow Library to build a WPF Application that can make
1. capture the video from webcam
2. screen capture to a video file
I try to find example code for the absolutely beginner
This codeplex project (Touchless) should give you a head start. It is pretty easy to look at the code and see how it works.
Related
I'm trying to develop an app using GTK3 + Glade and following examples and suggestions on internet I can obtain a first prototype of the application.
Now I want to add some plots in the app. I found that, in this contest, the Cairo library is the right solution. For the Cairo library I found this tutorial http://zetcode.com/gfx/cairo/
I tried to merge GTK3, Glade and Cairo using the C language but I'm not sure to use this tools in the right way.
Could you suggest me an example where using these tools is built an app that, e.g. pushing a button appear the plot of a curve?
Thank you
In Glade, you just need to add a GtkDrawingArea and you draw in it using cairo. Give a look at my gtk3-graph sample application that uses GTK+ 3 and cairo to plot a curve.
I am currently messing around a bit with libvlc on android using the NDK.
Well, I understand how to use native C code in an android app.
Now I would like to use the libvlc library to make a simple player which would read data from a socket.
Is it possible to use libvlc at that level? The problem I see is when it comes to set a window handler for libvlc to draw the image on.
Has anyone experienced with this that could give me some feedback?
Thank you.
You might be interested in this - https://bitbucket.org/tewilove/nyan.tv-jni/src
Edit: Looks like the nyan.tv link doesn't exist anymore. A possibly more 'official' sample is here -> https://bitbucket.org/edwardcw/libvlc-android-sample
I would like to consume a Motion Jpeg stream from an IP camera and ideally view it using the media element. I was hoping to find some ready made samples.
There is a really nice example (and controls to download) from channel9. Check visit here
Unfortunately the provided dll is out of browser only which I suspect will be a bit of a downer.
Without the use of native dlls, transcoding the meterial on the fly on your server is probably your best - if not only - option.
I want to automate the application develoepd in silverlight. Can you let me know whether there are any open source tools are available which can be used for automating SilverLight app. Thanks.
We are doing UI testing on a Silverlight application using the UIAutomation API, and it works very nicely.
Project White is a library that sits on top of UIAutomation, and many people find it helpful. I prefer to use the UIAutomation APIs directly - it's really not as hard as you might think, as my tutorial shows.
If you're looking to perform User Interface Automation (UIA) to simulate mouse clicks, keyboard presses, etc. there is no "easy" way to get this today.
I've seen some third party tools that may work, such as Telerik's. Note that I have not used and do not endorse this, just know it is out there!
I am currently trying out Project White and finding it quite easy to use.
Before using Project White I tried out WiPFlash which was also rather easy to use. It just lacked a few features that I was after (Right Click and Drag options).
Are there any controls that anyone is aware of that I can use to stream firewire video into a WPF app. I do not need camera control or capture just the video. I need WPF hosting because I'll be adding WPF content on top.
I was hoping that with the addition of having direct X surfaces in WPF something like this might appear.
Ideally looking for something relatively high level (not a direct show guy at all).
Thanks,
Brian
There are a couple really good video rendering packages for WPF. This guy Jeremiah Morrill has a blog where he discusses his numerous render projects. There's the WPF Win32 render project, and a number of low-level techniques he documents for how to access accelerated playback, Media Foundation .NET, DVD controls, etc... I believe his blog is titled "Jer's One Stop Shop".
Reading over his blog in general is a good idea if you are in to video/WPF. Last I checked, "MediaKit", one of his more comprehensive projects, enables easy use of DirectShow (simple xaml and your off and running, so don't worry) and other well known native interfaces. It's very robust and actively maintained, if not that specific project, check into some of the recent API's he's contributing on, some various Win7 media support also.
The only reason I'd bring up this other project, Augmented Reality, is that you remarked about adding content "on top". You should definitely check out wpfAugRel if your doing a lot of video production. Where to get an add on for it eludes me, but I'm sure you can find it off that site, but it allows for you to script in python some fairly slick real-time video production.
-- edit --
Right, look at this google code page, it has some video's (picture's worth a thousand words right?), but regardless, it allow's you to mix in 3D content into live-action, through the use of "marker" prop's, essentially bit's of paper with some easily machine recognizable feature's, that facilitate their underlying engine to inject computer rendered output into a real world scene, highly dynamic, so you can toss these marker's around and the 3D content move's fluidly... anyhow good luck.
Check out this article by UberDemo. It captures video into a WMV file with Windows Media Encoder and WPF. There is a paragraph about how to do the preview in a WPF application.